[libvirt-users] Fwd: Put virbr0 in promiscusous

[Sagar Shedge]

Hi ,


If you have any idea then please respond.


Regards,
Sagar
---------- Forwarded message ----------
From: Sagar Shedge <sagar.shedge92 at gmail.com>
Date: Wed, Nov 12, 2014 at 7:25 PM
Subject: Put virbr0 in promiscusous
To: libvirt-users at redhat.com


Hi ,


I have two virtual machines VM1 and VM2. Then I have added eth0 of  my VM
to 'default' network.

Use case :-
I want to monitor all traffic on virbr0('default' network).

Steps followed :-
1. Add VM1 eth0 to virbr0
2. Add VM2 eth1 to virbr0
3. brctl setageing ovsbr0 0 ..(To put bridge in promiscuous)

Now I am running tcpdump on eth1 of VM2 and trying to ping google.com(outside
world)

In VM2 (tcpdump -i eth1), I can see only ingress(incoming) traffic of VM1.
I am not able see outgoing traffic of VM1.

If I create another bridge and trying same scenario with 2 VM then VM2 can
see both ingress and outgress traffic.

So want to know what is the issue?
Is libvirt doing something different with this virtbr0 bridge?

-- 
Sagar Dilip Shedge,
Pune.

With Regards.




-- 
Sagar Dilip Shedge,
Pune.

With Regards.
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